Android 8.1 Oreo, LineageOS 15.1 for Galaxy S4 Mini is now available via a development build. This LineageOS 15.1 for Galaxy S4 Mini (serranodsdd/3gxx/ltexx/velte) is brought to you by developer arco68 and the S4 Mini VELTE build is by Danil_e71.

DISCLAIMER:THIS IS AN INITIAL BETA BUILD WHICH MAY HAVE MINOR BUGS. FLASH AT YOUR OWN RISK. Installing a custom ROM on a Galaxy S4 Mini (serranodsdd/3gxx/ltexx/velte) may require an unlocked bootloader, which may VOID your warranty and may delete all your data. Before proceeding further you may consider backup all data on the phone. You are the only person doing changes to your phone; neither the developer nor I can be held responsible for the mistakes done by you.

Follow this if you are flashing LineageOS 15.1 on Galaxy S4 Mini for the first time, or coming from another ROM:

Points to NOTE: – Try to avoid restoring apps backup using Titanium Backup. It may break things up. – Don’t restore system data using Titanium Backup! It will definitely break the current installation. – It is also discouraged to Restoring Apps + Data using Titanium Backup.

Boot into the custom Recovery. – Make sure to have a Custom recovery like a TWRP recovery or any other custom recovery. If not then download the TWRP recovery from Downloads link and follow the Custom Recovery Installation Guide (this only works for tar and tar.md5 file types)

Wipe the data partition (or do a factory reset), Cache partition, Dalvik Cache or ART cache and Format the System partition. – Here is a guide explaining how to wipe using TWRP recovery.

Upgrading from earlier version of LineageOS 15.1 on Galaxy S4 Mini (serranodsdd/3gxx/ltexx/velte):

Flash the latest LineageOS 15.1 ROM ZIP that you copied on your phone. – Here is a post explaining how to install LineageOS

Then flash the Lineage 15.1 Oreo GApps package. (Mostly the GApps is kind of self sustainable across ROM updates. You may need to follow this only If you don’t have Gapps after updating to the latest LineageOS 15.1 on your device.)

Complete the initial setup and enjoy Android 8.1 Oreo with LineageOS 15.1 on Galaxy S4 Mini. After the installation of LineageOS 15.1 for Galaxy S4 Mini you may want to enable ROOT access on your phone and here is how you can do that: – LineageOS 15.1 ROOT.